Tetraacetate
四乙酸盐
🗣️ 情景例句
OK, let's talk.
好， 让我们谈谈。
Perhaps he isn't here.
也许他不在这儿。
The comparable speed from the Moon is only 1.5 miles per second.
而从月球出发的相应速度只是每秒1。5英里。